Polyolefin-based Film
AssigneeLG Chem, Ltd.
InventorsOh Joo Kwon, Sol Cho, Ki Soo Lee, Chang-Hwan Jang, Dae Sik Hong, Sung Hyun Park, Eun Ji Shin, Hyun Jee Kwon, Sung Ho Park
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Abstract
The present disclosure provides a polyolefin-based film including an olefin polymer which is controlled in the content of the branched polymer structure in the polymer and the weight average molecular weight of the main chain in the structure to exhibit excellent processability and transparency. Therefore, the polyolefin-based film not only exhibits high transparency independent of processing conditions, but also reduces the increase in film haze even when the thickness of the film increases.
Claims20
A polyolefin-based film comprising an olefin polymer satisfying the following conditions (a) to (d):
- (a) a density:
- 0.910 g/cm3 to 0.930 g/cm3
- (b) a melt index (measured according to ASTM D1238 at a temperature of 190° C. under a load of 2.16 kg):
- 0.5 g/10 min to 2.0 g/10 min
- (c) a content of a branched polymer structure:
- 1 to 7 wt % based on the total weight of the olefin polymer
- (d) a weight average molecular weight of main chain in the branched polymer structure:
- 100,000 to 600,000 g/mol.
Dependencies are inferred from the claim text.